def set_root_hash(self, root_hash):
assert is_string(root_hash)
assert len(root_hash) in [0, 32]
if self.transient:
self.transient_root_hash = root_hash
return
if root_hash == BLANK_ROOT:
self.root_node = BLANK_NODE
return
# print(repr(root_hash))
self.root_node = self._decode_to_node(root_hash)
def update(self, key, value):
'''
:param key: a string
:value: a string
'''
if not is_string(key):
raise Exception("Key must be string")
# if len(key) > 32:
# raise Exception("Max key length is 32")
if not is_string(value):
raise Exception("Value must be string")
# if value == '':
# return self.delete(key)
old_root = copy.deepcopy(self.root_node)
self.root_node = self._update_and_delete_storage(
self.root_node, bin_to_nibbles(to_string(key)), to_string(value))
self.replace_root_hash(old_root, self.root_node)
def set_root_hash(self, root_hash):
if not is_string(root_hash):
raise PlenumTypeError('root_hash', root_hash, bytes)
if not (len(root_hash) in [0, 32]):
raise PlenumValueError('root_hash', root_hash, 'length in range [0, 32]')
if self.transient:
self.transient_root_hash = root_hash
return
if root_hash == BLANK_ROOT:
self.root_node = BLANK_NODE
return
# print(repr(root_hash))
self.root_node = self._decode_to_node(root_hash)
def update(self, key, value):
'''
:param key: a string
:value: a string
'''
if not is_string(key):
raise Exception("Key must be string")
# if len(key) > 32:
# raise Exception("Max key length is 32")
if not is_string(value):
raise Exception("Value must be string")
# if value == '':
# return self.delete(key)
old_root = copy.deepcopy(self.root_node)
self.root_node = self._update_and_delete_storage(
self.root_node,
bin_to_nibbles(to_string(key)),
to_string(value))
self.replace_root_hash(old_root, self.root_node)
def delete(self, key):
'''
:param key: a string with length of [0, 32]
'''
if not is_string(key):
raise Exception("Key must be string")
if len(key) > 32:
raise Exception("Max key length is 32")
old_root = copy.deepcopy(self.root_node)
self.root_node = self._delete_and_delete_storage(
self.root_node, bin_to_nibbles(to_string(key)))
self.replace_root_hash(old_root, self.root_node)
def set_root_hash(self, root_hash):
if not is_string(root_hash):
raise PlenumTypeError('root_hash', root_hash, bytes)
if not (len(root_hash) in [0, 32]):
raise PlenumValueError('root_hash', root_hash,
'length in range [0, 32]')
if self.transient:
self.transient_root_hash = root_hash
return
if root_hash == BLANK_ROOT:
self.root_node = BLANK_NODE
return
# print(repr(root_hash))
self.root_node = self._decode_to_node(root_hash)
def delete(self, key):
'''
:param key: a string with length of [0, 32]
'''
if not is_string(key):
raise Exception("Key must be string")
if len(key) > 32:
raise Exception("Max key length is 32")
old_root = copy.deepcopy(self.root_node)
self.root_node = self._delete_and_delete_storage(
self.root_node,
bin_to_nibbles(to_string(key)))
self.replace_root_hash(old_root, self.root_node)
def encode_node(nd):
if is_string(nd):
return encode_hex(nd)
else:
return encode_hex(rlp_encode(nd))
